diff --git a/cookbook/copilot-sdk/dotnet/recipe/README.md b/cookbook/copilot-sdk/dotnet/recipe/README.md
index be2d0045..7506bc1b 100644
--- a/cookbook/copilot-sdk/dotnet/recipe/README.md
+++ b/cookbook/copilot-sdk/dotnet/recipe/README.md
@@ -21,9 +21,11 @@ dotnet run <filename>.cs
 | -------------------- | ------------------------------------ | ------------------------------------------ |
 | Error Handling       | `dotnet run error-handling.cs`       | Demonstrates error handling patterns       |
 | Multiple Sessions    | `dotnet run multiple-sessions.cs`    | Manages multiple independent conversations |
-| Managing Local Files | `dotnet run managing-local-files.cs` | Organizes files using AI grouping          |
-| PR Visualization     | `dotnet run pr-visualization.cs`     | Generates PR age charts                    |
+| Managing Local Files ⚠️ | `dotnet run managing-local-files.cs` | Organizes files using AI grouping          |
+| PR Visualization ℹ️   | `dotnet run pr-visualization.cs`     | Generates PR age charts                    |
 | Persisting Sessions  | `dotnet run persisting-sessions.cs`  | Save and resume sessions across restarts   |
+| Accessibility Report ℹ️ | `dotnet run accessibility-report.cs` | Analyzes web page accessibility            |
+| Ralph Loop ⚠️         | `dotnet run ralph-loop.cs`           | Autonomous development loop                |
 
 ### Examples with Arguments
 
@@ -40,6 +42,137 @@ dotnet run pr-visualization.cs -- --repo github/copilot-sdk
 dotnet run managing-local-files.cs
 ```
 
+## Safety & Prerequisites
+
+Some recipes have side effects or external dependencies. Expand each section for safe testing patterns and prerequisites.
+
+<details>
+<summary><strong>⚠️ Managing Local Files</strong> — Modifies your filesystem</summary>
+
+Before running on a real directory, test it on a copy first.
+Run these snippets from this recipe directory so the recipe path is captured before switching to the temporary folder.
+
+**PowerShell:**
+```powershell
+$recipeDir = (Get-Location).Path
+$tempDir = New-Item -ItemType Directory -Path ([IO.Path]::Combine([IO.Path]::GetTempPath(), "copilot-test-files"))
+@("document1.txt", "image1.png", "data.json") | ForEach-Object { 
+    New-Item -Path "$tempDir/$_" -ItemType File
+}
+cd $tempDir
+dotnet run "$recipeDir/managing-local-files.cs"
+# Inspect results, then clean up
+Remove-Item $tempDir -Recurse
+```
+
+**Bash:**
+```bash
+recipeDir=$(pwd)
+tempDir=$(mktemp -d)
+touch "$tempDir"/{document1.txt,image1.png,data.json}
+cd "$tempDir"
+dotnet run "$recipeDir/managing-local-files.cs"
+# Inspect results, then clean up
+rm -rf "$tempDir"
+```
+
+Edit the `targetFolder` variable in the `.cs` file to point to your test directory before running.
+</details>
+
+<details>
+<summary><strong>⚠️ Ralph Loop</strong> — Creates git commits and modifies files</summary>
+
+Always run it in an isolated git repository first to verify behavior.
+Run these snippets from this recipe directory so the recipe path is captured before switching to the temporary repository.
+
+**PowerShell:**
+```powershell
+$recipeDir = (Get-Location).Path
+$tempDir = New-Item -ItemType Directory -Path ([IO.Path]::Combine([IO.Path]::GetTempPath(), "copilot-test-repo"))
+cd $tempDir
+git init
+git config user.email "test@example.com"
+git config user.name "Test User"
+
+# Create a PROMPT_task.md for the recipe to work with
+"# Task`nCreate a simple README" | Out-File PROMPT_task.md
+dotnet run "$recipeDir/ralph-loop.cs"
+
+# Review commits and changes
+git log --oneline
+git diff
+
+# Clean up
+cd ..
+Remove-Item $tempDir -Recurse
+```
+
+**Bash:**
+```bash
+recipeDir=$(pwd)
+tempDir=$(mktemp -d)
+cd "$tempDir"
+git init
+git config user.email "test@example.com"
+git config user.name "Test User"
+
+# Create a PROMPT_task.md for the recipe to work with
+echo -e "# Task\nCreate a simple README" > PROMPT_task.md
+dotnet run "$recipeDir/ralph-loop.cs"
+
+# Review commits and changes
+git log --oneline
+git diff
+
+# Clean up
+cd ..
+rm -rf "$tempDir"
+```
+
+The recipe requires a git repository with at least one `PROMPT_*.md` file and will run in an infinite loop until manually stopped.
+</details>
+
+<details>
+<summary><strong>ℹ️ Accessibility Report</strong> — Requires Playwright MCP</summary>
+
+This recipe requires Playwright MCP to be installed and available:
+
+```bash
+npm install -g @playwright/mcp
+```
+
+Or let Node Package Manager install it on-demand. The recipe will attempt to launch `npx @playwright/mcp` automatically. Run the recipe as normal:
+
+```bash
+dotnet run accessibility-report.cs
+```
+
+The recipe will prompt you for a URL to analyze and generate an accessibility report.
+</details>
+
+<details>
+<summary><strong>ℹ️ PR Visualization</strong> — Requires GitHub API access</summary>
+
+This recipe requires:
+
+- Access to a GitHub repository (public or private, with appropriate credentials)
+- `gh` CLI tool installed and authenticated: https://cli.github.com/
+
+Run with a repository argument:
+
+```bash
+dotnet run pr-visualization.cs -- --repo owner/repo-name
+```
+
+Example:
+
+```bash
+dotnet run pr-visualization.cs -- --repo github/copilot-sdk
+```
+
+**Note:** GitHub API requests are rate-limited. Large repositories or frequent runs may hit rate limits. See [GitHub API rate limiting](https://docs.github.com/rest/overview/rate-limits-for-the-rest-api) for details.
+</details>
+
 ## File-Based Apps
 
 These examples use .NET's file-based app feature, which allows single-file C# programs to: